The BPF_S_ANC_NLATTR_NEST extension implementation in the sk_run_filter function in net/core/filter.c in the Linux kernel through 3.14.3 uses the reverse order in a certain subtraction, which allows local users to cause a denial of service (over-read and system crash) via crafted BPF instructions. NOTE: the affected code was moved to the __skb_get_nlattr_nest function before the vulnerability was announced.
CVE-2014-3145 - Medium Severity Vulnerability
Julia Cartwright's fork of linux-stable-rt.git
Library home page: https://git.kernel.org/pub/scm/linux/kernel/git/julia/linux-stable-rt.git
Found in HEAD commit: 22324ae9738f0a1eeb173ff05137c8317c350189
Found in base branch: master
The BPF_S_ANC_NLATTR_NEST extension implementation in the sk_run_filter function in net/core/filter.c in the Linux kernel through 3.14.3 uses the reverse order in a certain subtraction, which allows local users to cause a denial of service (over-read and system crash) via crafted BPF instructions. NOTE: the affected code was moved to the __skb_get_nlattr_nest function before the vulnerability was announced.
Publish Date: 2014-05-11
URL: CVE-2014-3145
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Local - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: None - Availability Impact: High
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://www.linuxkernelcves.com/cves/CVE-2014-3145
Release Date: 2014-05-11
Fix Resolution: v3.15-rc2,v3.12.21,v3.14.5,v3.2.60
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